I have DiKane foot straps on my wings screwed to the tubing,and I think you would be better off sewing a web fabric on the wing tramp fabric at the outside tubing location.Make your foot straps by leaving a "pocket" to fit your foot with wet suit booties on.My have weathered poorly and are pricey too.They are 20 years old too.I have 3 per side,one for each trapeze I have.Only one foot needs to be in that pocket and the other floating as needed for balance.Good Luck,Bill 404 21SE